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| author | Christoph Lameter <clameter@engr.sgi.com> | 2006-02-01 03:05:32 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-02-01 08:53:15 -0800 |
| commit | aa3f18b3391ac305baa01faead3fdf9147daf54b (patch) | |
| tree | 7e5e1f300058279bafdf7b576e072ced3e5f45d3 | |
| parent | 4e6a510a74145585f4111d60d1b5fd450d795dd8 (diff) | |
| download | lwn-aa3f18b3391ac305baa01faead3fdf9147daf54b.tar.gz lwn-aa3f18b3391ac305baa01faead3fdf9147daf54b.zip | |
[PATCH] zone_reclaim: do not unmap file backed pages
zone_reclaim should leave that to the real swapper. We are only interested
in evicting unmapped pages.
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | mm/vmscan.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c index 61ca0097c834..8277f93148b5 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -477,6 +477,12 @@ static int shrink_list(struct list_head *page_list, struct scan_control *sc) * processes. Try to unmap it here. */ if (page_mapped(page) && mapping) { + /* + * No unmapping if we do not swap + */ + if (!sc->may_swap) + goto keep_locked; + switch (try_to_unmap(page)) { case SWAP_FAIL: goto activate_locked; |